NiFe nanocatalysts for the hydrocracking heavy crude oil

NiFe nanocatalysts for the hydrocracking heavy crude oil

Asphaltenes

Crude oil

Sulfur

Distillation

Resins

Scanning electron microscopy

Iron

Hydrocracking

Nanoparticles

High resolution transmission electron microscopy

X ray scattering

Nanocatalysts

Petroleum chemistry

Batch reactors

Nickel

Molar ratio

Nitrogen removal

Binary alloys

Microemulsions

Iron metallography

Emission spectroscopy

Inverse problems

Iron alloys

Nickel metallography

In this work, NiFe nanocatalysts with different molar ratios 1:0.33, 1:1 and 1:3 were synthesized by a modified inverse microemulsion method at Soft Chemistry conditions in order to apply them to heavy crude oil (HCO) in situ hydroprocessing and to improve their physico-chemical properties. All samples were characterized by mean, atomic absorption (AA), small-angle X-ray scattering (SAXS), scanning transmission electron microscopy (STEM), X-ray energy dispersion spectroscopy (EDX), and X-ray photoelectron emission spectroscopy (XPS). Catalytic evaluation of nanocatalysts was performed in a batch reactor at 372 C, 9.8 MPa of initial H2 pressure and 1 h of reaction time. The reaction products, were analyzed by means analysis of saturates, aromatics, resins, and asphaltenes (SARA) fractions, simulated distillation (SIMDIS), API gravity, rheology, and nitrogen and sulfur contents. Techniques applied reveal that nanoparticles of NiFe with spherical morphology with average sizes in the range (120) nm and agglomerates smaller than 50 nm were obtained. The nanocatalysts synthesized improved API gravity from 13.1 to 18.3, furthermore, the asphaltenes conversion was into 37.243.7%. Moderate sulfur and nitrogen removal was obtained. SARA analysis indicated that saturated and aromatics fractions increased while resins and asphaltenes were reduced. 2018 Elsevier B.V.

17-25

349

Catalysis Today

2020

Lam-Maldonado, M.

Melo-Banda, J.A.

Macias-Ferrer, D.

Schacht, P.

Mata-Padilla, J.M.

de la Torre, A.I. Reyes

Meraz Melo, M.A.

Dominguez, J.M.

journalArticle

9205861

10.1016/j.cattod.2018.08.005